. Manual of tree diseases . Trees. 242 MANUAL OF TREE DISEASES of many kinds of trees (Fig. 46). The second species Is a variety of the first, seemingly confined to eastern, southern and central United States, while the fom-th is so far reported only from California. All of these fungi cause powdery white patches on. Fig. 46. — Powdery mildew on oak leaf. both sides of leaves, but do little damage. The black or brown- ish fruiting-bodies can be seen scattered or in clusters over the affected area of the leaf. The life history and methods of con- trol of powdery mildew fungi are discussed on pa
. Manual of tree diseases . Trees. 242 MANUAL OF TREE DISEASES of many kinds of trees (Fig. 46). The second species Is a variety of the first, seemingly confined to eastern, southern and central United States, while the fom-th is so far reported only from California. All of these fungi cause powdery white patches on. Fig. 46. — Powdery mildew on oak leaf. both sides of leaves, but do little damage. The black or brown- ish fruiting-bodies can be seen scattered or in clusters over the affected area of the leaf. The life history and methods of con- trol of powdery mildew fungi are discussed on page Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rankin, W. Howard (William Howard), b. 1888. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1918
